Abstract: It is important to understand the impact of the undercrossed construction of the metro shield tunnel on the track bed of existing tram for engineering project safety. By taking the project of Gaoquan shield tunnel undertaking the existing operating Tram Line 1 in Shenyang as an example, the Peck settlement theoretical formula was combined with numerical simulation to predict the settlement of the tram track bed, and stratum deformation control measures and construction monitoring programs were provided. According to the monitoring data from the on-site, the rationality and safety of the design plan were further verified. The results show that the maximum settlement value of tram track bed predicted by the Peck settlement curve is relatively large which was caused by shield tunneling construction. For the two shield tunnels, when the left and right shields cross the track bed one after another, the tram track bed settlement accounts for about 60% to 70% of the final settlement value; and the track bed settlement value above the tunnel constructed first is too large. For similar subway undercrossing projects, it is recommended to use the combination of Peck formula and numerical simulation to predict settlement deformation, formulate stratum deformation control measures and emergency treatment plans in advance, strengthen monitoring and measurement, and real-time feedback of construction dynamics to ensure safety.